Shoe-maker s jack



(No Model.) 3 Sheets-Sheet 1. A. JEFFERYS.

SHOE MAKERS JAGK. No. 350,137. Patented Oct. 5, 1886.

N. PETERS. PM J-Lithognpher, Wuhingwn, I). c.

(No Model.) Sheets-Sheet 2. A. JEFFERYS.

SHOE MAKBRS JACK.

No. 350,137. Patented Oct. 5, 1886.

(No Model.) 3 SheetsSheet 3.

A. JEPFERYS.

SHDE MAKER'S JACK. No. 350,137. Patented Oct. 5, 1886.

i5 fi 115 l Jr I? g G P E f OR M N4 PETERS PhaivLilhuznpher. Wuhington.D. C.

Ntrae ALBERT JEFFERYS, OF PHILADELPHIA, PENNSYLVANIA.

SHOE-MAKERS JACK.

QBPEQ KFICATION forming part of Letters Patent No. 350,137, datedOctober 5, 1886. Application filed February 12, 1886. Serial No.191,731. (No model.)

To all whom it may concern.-

Be it known that I, ALBERT JEFFERYS, a subject of the Queen of GreatBritain, residing at Philadelphia, in the county of Philadelphia andState of Pennsylvania, have invented certain new and useful Improvementsin Shoe-Makers Jacks, of which the following is a specification,reference being had therein to the accompanying drawings.

The object of my invention is to provide a shoe-makers jack which willbe simple and iiieXpensive in construction, and which may be adjusted inany desired position, so that the operator may conveniently perform theoperations of lasting, stitching, pegging, heeling, trimming,burnishing, finishing, &c.

In the drawings, Figure 1 is a side elevation of my jack, the dottedlines showing its position when partly raised; Fig. 2, a plan of thesame; Fig. 3, a plan of the base of the jack; Fig. 4, asectionalelevation of thejack online :0 m, Fig. 2; Fig. .3, a side elevation ofthe jack in position for stitching; and Fig. 6, a plan of part oflast-plate, showing lever for looking or unlocking plate and bolt forsecuring lever.

A, Figs. 1, 3, 4, and 5, is a circular base having in it a radial slot,(1, Fig. 3. This base is firmly secured by screws or bolts to a permanent table or stand.

B is a plate or disk which is placed upon the top of base A, and whichcarries the heel and toe seats 0 D for the last, as hereinafterdescribed.

G is a journal-bearing furnished with an arm, G, which passes throughand is pivoted in the radial slot a in base A at I).

e is a journal-bearing on the plate or disk B, which is furnished with avertical slot, 0, Fig. 4, through which a pin, N, on heel-seat may pass.

H is the journal, which is furnished with a spiral groove, I J, a squarebar passing through a corresponding hole in journal H. K K are crown orbevel wheels carried upon the ends of bar J.

L L are corresponding wheels carried upon the jomnal-bearings e G.

0, Figs. 2, 4, and 6, is an opening in theplate or disk B, which hasgrooves E on its sides for holding the toe-seat D, and d is an openingfor holding the heel-seat O.

S, Fig. 3, is a clamp for clamping the plate B in any desired position.This clamp is pivoted in the base A at it, and is operated by a screw,S, which passes through the side of base A.

The heel-seat O is constructed as shown in Fig. 4. Its front end carriesa pin, N, which passes into the groove I injournal H. Its rear end isrounded off, so as to touch the plate B in only one place, and its topcarries a pin, F, which passes into a corresponding hole in the heel ofthe last.

The operation of thejack is as follows: The plate or disk B, whichcarries the toe and heel seats D and O, is pivoted at its center uponthe journal H, and this disk maybe swung around H as a center to anydesired position. As shown in the drawings, the wheels K and L aremeshed one into the other, and the plate B and journal H areconsequently looked together, and if the plate B is turned thejournal Hturns with it. If the rod J is raised, throwing wheels K and L out ofgear and wheels K L into gear, the journal H will be locked to thejournal-bearing G, and the plate B will turn, while the journalHwillremain immovable. \Vhen the last is placed upon the seats D and O, thepin F upon the latter passing into a hole in the heel of the last, andthe pin N passing through a slot, 0, in the journalbearing 6 and intothe spiral grooveI in journal H, the bar J is raised, throwing wheels Kand L out of gear and wheels K L into gear. The plate B is now turnedaround its center, and the pin N travels down in slot I, drawing downthe front end of heel-seat O, and throws the upper end toward thetoe-seat D, firmly pressing the last against this seat and looking it sothat it cannot be removed. The bar J may now be thrown down, throwingwheels K and L into gear and wheels K L out of gear, and the plateB andthe last may be swung into any desired position without unlocking thelast. If the bar J is so placed that both pairs of wheels K L K L are ingear at the same time, the whole jack is locked and cannot be turned inany direction. As before mentioned, the heel-seat O has its rear endrounded off and touches the plate B in one point only. This allows theheel-seat to be tilted by the pin N being drawn up or down by groove Iin jouragainst the wall '5.

nal E. It should also be mentioned that, in order to prevent jamming,the bottom of the heel-seat is not a straight line, but a curve, asshown in Fig. 4, and hence the heel-seat has but two lines of bearing,one on its rear end and one on its bottom. In order to raise andlowerthe bar J conveniently, Ihave alever, M, pivoted to the plate B at f.This lever is turned up, as shown, and its upper end, Q, is bifurcated,Fig. 5, and passes beneath a collar, P, which is on the upper'part ofwheel K. The outer end of the lever M is furnished with three holes, g gg. v

B, Figs. 4 and 6, is a bolt which passes through the side walls, z'j, ofthe opening 0 in plate B, and which is furnished with a head, h.

T is ahelicalspring surrounding bolt B, one end bearing against the headh and the other The outside end of the head his conical, as shown inFig. 6, and is adapted to enter the holes g y 9 in the end of lever M.

When the wheels K L are meshing, the head I h of bolt R is in the holeg. If the wheels K L are meshing, the head h is placedin hole and ifboth pairs of wheels are gearing the head is placed in hole 9.

When itis desired to tilt the last, the-plate B is tilted, as shown inFig. l by the dotted lines, turning upon the screw b as a center. \Vhenthe plate has been tilted sufficiently,the screw S is screwed in and theclamp S is pressed firmly against the arm G of journal-bearing G, andholds this arm and the plate B, &e., firmly in place. If desired, thescrew 1) may be removed and the plate B, 810., placed as shown in Fig,5. This wouldbea very convenient position for performing the operationof stitching.

The jack may be. adapted to lasts of different lengths by simply movingthe toe-seat D from one groove E to another.

Having thus described my invention, I claim and desire to secure byLetters Patent 1. The combinatiomin a shoe-makersjaok, of the base A,plate B, with journal-bearing e and holes 0 and d, for receivinglast-seats Oand D, last-seats Oand D, journal-bearing G, with arm G,screw 1), journal H, with slot I, pin N on last-seat 0, bar J, withwheels K K, and wheels L L, all. arranged and operating sub- ;stantiallyas and for the purposes set forth.

2. The combination,in a shoe-makers jack, of the base A, with radialslot a, plate B, with journal-bearing e and holes a and d, for receivinglast seats O'and D last-seats O andD, the former with pins F and N,journal-bearing G, with arm- G, screw b, journal H, with slot I,

bar J ,with wheels-K K, wheels L L, screw S,

and'elamp S, all substantially as and for the purposes set forth.

3; The herein-described device for raising and lowering the bar I, andfor throwing the wheels K L K L in or out of gear, consisting of thelever M, pivoted at f, having its topQ bifurcated and itsontsideendfurnished with three holes, 9 g 9 and bolt R, with conical pointedhead It and helical spring T, all substantially as set forth.

4-. The herein-described device for retaining the plate B andjournal-bearing arm G at any angle, consisting of the clamp S, pivotedto base A at k, and operated by a screw, S, substantially as set forth.

Intestimony whereof I a-ffi-x my signature in presence of two witnesses.

-ALBERT J'EFFERYS. Witnesses:

EDWARD F. PUGH, O. O. STODDARD.

